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|
{ config, lib, ... }:
let
inherit (builtins)
attrNames baseNameOf head match pathExists readFile ;
inherit (lib)
filter foldl genAttrs hasPrefix mapAttrsToList mkOption
optionalAttrs unique ;
inherit (lib.types)
attrsOf listOf nullOr path ;
allusers = config.users.users;
cfg = config.nixsap.deployment;
# XXX If the file is encrypted:
# error: the contents of the file ‘...’ cannot be represented as a Nix string
read = key:
let
m = match "^(.+)@[^@]+$" key;
s = if m != null then head m else key;
in if cfg.secrets != null
then readFile (cfg.secrets + "/${s}")
else "";
in {
options.nixsap.deployment = {
secrets = mkOption {
description = ''
Directory with the secrets on the deploy machine. If not specified,
each key will be an empty file.
'';
type = nullOr path;
default = null;
example = "<secrets>";
};
keyStore = mkOption {
description = ''
Directory with the keys on the target machine. NixOps uses /run/keys,
and this is default. If you use another deployment tool, you would
like to set it to something else.
'';
type = path;
default = "/run/keys";
example = "/root/keys";
};
keyrings = mkOption {
type = attrsOf (listOf (nullOr path));
description = ''
Binds keys to a user. It's possible to share the same key between
multiple users, of course by different names: "/run/keys/foo"
and "/run/keys/foo@bar" will use the same secret file "foo". Any
file whose path does not start with `nixsap.deployment.keyStore` is
deliberately ignored. E. i. you can pass any file names, and nixsap
will pick up keys for you. For convenience, it is allowed to pass
null values, which are filtered-out as well.
'';
default = {};
example = { mysqlbackup = [ "/run/keys/s3cmd.cfg" ];
pgbackup = [ "/run/keys/s3cmd.cfg@pgbackup" ];
};
};
};
config = {
users.users = genAttrs (attrNames cfg.keyrings) (
name: optionalAttrs (name != "root") { extraGroups = [ "keys" ]; }
);
deployment.keys = foldl (a: b: a//b) {} (
mapAttrsToList (name: keys:
let realkeys = unique (filter (n: n != null && hasPrefix cfg.keyStore n) keys);
in genAttrs (map baseNameOf realkeys)
(key: { text = read key;
user = toString allusers.${name}.uid;
})
) cfg.keyrings
);
};
}
|
